Title: The Multi-LDI: an image based rendering approach for interaction navigation, and visualization in complex virtual environments
Authors: Stoev, Stanislav L.
Peter, Ingmar
Strasser, Wolfgang
Citation: WSCG '2002: Short Communication Papers: The 10-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2002, 4.-8. February 2002 Plzeň: Conference proceedings, p. 107-114.
Issue Date: 2002
Publisher: UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2002/Papers_2002/G43.pdf
ISBN: 1213-6972 (hardcopy)
1213-6980 (CD-ROM)
1213-6964 (on-line)
Keywords: vykreslování;vrstvené hloubkové obrázy;virtuální prostředí;techniky interakce
Keywords in different language: rendering;layered depth images;virtual environments;interaction techniques
Abstract: In this paper, we present a new data structure for image-based rendering: the multi LDI. The multi LDI consists of a number of Layered Depth Images (LDI) covering a hemisphere of possible viewing angles. It allows compact image-based storage and fast rendering of large and complex scenes, while supporting rendering from large range of viewing directions. Since the internal occlusion in each LDI is very small, and only one of the LDIs in the multi LDI is rendered at a time, the rendering cost is significantly reduced compared to geometry-based rendering and even compared to other image-based rendering methods. Moreover, the single LDIs in the multi LDI can be generated on demand using a number of depth images rendered with an offscreen renderer. We also discuss a comparison of the geometry-based rendering and our image-based method and present some measured rendering times. Furthermore, we describe the utilization of this technique in a complex Virtual Environment (VE) for realizing navigation, visualization, and interaction aids. In particular, we present a multiple viewport technique providing two important features: (1) A sort of history during the modeling process, whereas a live 3D copy of the scene is displayed in a window in front of the user. (2) Different live views of the scene, seen from arbitrary viewpoints, in order to display details occluded in the normal view.
Rights: © UNION Agency
Appears in Collections:WSCG '2002: Short Communication Papers

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